I believe -- but in this high-powered crowd, I am not certain -- that you need make sure that "Hide file extensions for known file types" is not checked. Otherwise it is a PITA to Rename anything!
Go to "Folder Options | View" -- any way you like -- and UNcheck "Hide file extensions for known file types". This may, or may not, help you. ______________
Certainly if the file was renamed with a .txt extension it would become unusable.
